How to support dbt-external-tables in new database?

[hantmac]

Describe the feature

I want to support the external stage of Databend.

Additional context

Is this feature database-specific? Which database(s) is/are relevant? Please include any other relevant context here.
This feature is a database-specific. The database is Databend

Who will this benefit?

Some databend users want to use dbt-external-tables in there dbt system.

[dataders]

@hantmac we really need a CONTRIBUTING.md! In the meantime, I suggest looking at previous PRs that add support. For example:

• Add support for Azure Synapse External Tables #44
• Spark external tables #51
• dbt-athena-community support #203

Predominately you're going to need a dispatched databend__create_external_table() macro. Depending on how different databend is from other platforms, there's some other macros you'll need to hit as well.